Help to create Amplifier in Class-D.

unicproaudio · 31st January 2007, 07:38 PM

Somebody of the list could help me, I am wanting to create an amplifier class d with tension + / - of 1000 to 2000 WRMS. If somebody has a circuit to send I am grateful, I am new in the forum.
Thanks to all.
Excuse me for English.

ChocoHolic · 5th February 2007, 08:26 AM

Take care. Even if somebody is going to post a schematic. The schematic is just half of the path.
Lower power, may be 100W...200W, is not so troublesome. But several kW end up in high voltages, high currents.... at high frequencies this means high di/dt, high du/dt... both generating noise and tending to disturb the circuit itself.

Such beasts usually do not work just by a fortunate accident. Things might be easier if you go to low switching frequencies and allow slow switching transients. But for a full range amp you might have some struggle. (At least I do have

)

Kuzmenko · 5th February 2007, 08:50 AM

If we talk about 1..2kW.... The schematic without proper construction development it`s like TICKET WITHOUT BUS.
The schematic alone will give you nothing.

ChocoHolic · 5th February 2007, 10:50 AM

...ohh yes...
Right now investigating some decent 10V...100Vpp from one end of an wire to other end of the wire. The peaks are about some ten ns wide... The length of the wire is just about 50mm... It is the half bridge wire between upper and lower MosFet, this is causing quite some undershoot for the driver IC.... resulting in malfunction/shut down (IRS20954S) or death of IC in case of my design variation without shut down (IR2113)...

Have fun
Choco-Chief but Class-D-Rookie must go on to play with high currents....

31st January 2007, 07:38 PM	#1
unicproaudio diyAudio Member Join Date: Nov 2006	Help to create Amplifier in Class-D. Somebody of the list could help me, I am wanting to create an amplifier class d with tension + / - of 1000 to 2000 WRMS. If somebody has a circuit to send I am grateful, I am new in the forum. Thanks to all. Excuse me for English.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Create an amplifier with RCA 2N2148 Gem. Transister	edi907	Solid State	6	3rd July 2009 10:13 PM
create a DC offset value for non-inverting amplifier	finding_apple	Parts	4	4th June 2008 09:01 AM
Class D Vs Class I (Balanced Current Amplifier)	rmsaudio	Class D	28	29th September 2006 07:03 AM
How to create a simple amplifier?	mikevolta	Chip Amps	4	25th October 2005 01:22 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

5th February 2007, 08:26 AM	#2
ChocoHolic diyAudio Member Join Date: Dec 2003 Location: Munich	Take care. Even if somebody is going to post a schematic. The schematic is just half of the path. Lower power, may be 100W...200W, is not so troublesome. But several kW end up in high voltages, high currents.... at high frequencies this means high di/dt, high du/dt... both generating noise and tending to disturb the circuit itself. Such beasts usually do not work just by a fortunate accident. Things might be easier if you go to low switching frequencies and allow slow switching transients. But for a full range amp you might have some struggle. (At least I do have )

5th February 2007, 08:50 AM	#3
Kuzmenko diyAudio Member Join Date: Nov 2004 Location: Zaporozhye	If we talk about 1..2kW.... The schematic without proper construction development it`s like TICKET WITHOUT BUS. The schematic alone will give you nothing.

5th February 2007, 10:50 AM	#4
ChocoHolic diyAudio Member Join Date: Dec 2003 Location: Munich	...ohh yes... Right now investigating some decent 10V...100Vpp from one end of an wire to other end of the wire. The peaks are about some ten ns wide... The length of the wire is just about 50mm... It is the half bridge wire between upper and lower MosFet, this is causing quite some undershoot for the driver IC.... resulting in malfunction/shut down (IRS20954S) or death of IC in case of my design variation without shut down (IR2113)... Have fun Choco-Chief but Class-D-Rookie must go on to play with high currents....

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)